Cooperative diversity schemes for asynchronous wireless networks
Wireless Personal Communications: An International Journal
Distributed Algebraic Space-Time Codes for Ultra-Wideband Communications
Wireless Personal Communications: An International Journal
Code design for multihop wireless relay networks
EURASIP Journal on Advances in Signal Processing
Cyclic Division Algebras: A Tool for Space-Time Coding
Foundations and Trends in Communications and Information Theory
Recovering Multiplexing Loss through Concurrent Decode-and-Forward (DF) Relaying
Wireless Personal Communications: An International Journal
EURASIP Journal on Wireless Communications and Networking - Special issue on cooperative communications in wireless networks
To code in space and time or not in multihop relay channels
IEEE Transactions on Signal Processing
Linear detection for the nonorthogonal amplify and forward protocol
IEEE Transactions on Wireless Communications
Impact of CSI on distributed space-time coding in wireless relay networks
IEEE Transactions on Wireless Communications
Differential distributed cayley space-time codes
IEEE Transactions on Wireless Communications
A comprehensive study of repetition-coded protocols in multi-user multi-relay networks
IEEE Transactions on Wireless Communications
Impact of imperfect channel estimation on the performance of amplify-and-forward relaying
IEEE Transactions on Wireless Communications
Ergodic channel capacities for the amplify-and-forward half-duplex cooperative systems
IEEE Transactions on Information Theory
High-SNR analysis of outage-limited communications with bursty and delay-limited information
IEEE Transactions on Information Theory
D-MG tradeoff and optimal codes for a class of AF and DF cooperative communication protocols
IEEE Transactions on Information Theory
Joint source/relay precoder design in amplify-and-forward relay systems using an MMSE criterion
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
Diversity-multiplexing tradeoff for the MIMO static half-duplex relay
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
Distributed space-time trellis codes for a cooperative system
IEEE Transactions on Wireless Communications
Construction methods for asymmetric and multiblock space-time codes
IEEE Transactions on Information Theory
AAECC'07 Proceedings of the 17th international conference on Applied algebra, algebraic algorithms and error-correcting codes
Normalized minimum determinant calculation for multi-block and asymmetric space-time codes
AAECC'07 Proceedings of the 17th international conference on Applied algebra, algebraic algorithms and error-correcting codes
Information combining for relay networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Dual hop MIMO relaying with orthogonal space-time block codes
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Cyclic distributed space-time codes for wireless relay networks with no channel information
IEEE Transactions on Information Theory
Coding for the nonorthogonal amplify-and-forward cooperative channel
IEEE Transactions on Information Theory
On the diversity order of non-orthogonal amplify-and-forward over block-fading channels
IEEE Transactions on Wireless Communications
Diversity-multiplexing tradeoff for the MIMO static half-duplex relay
IEEE Transactions on Information Theory
Analytical performance of amplify-and-forward MIMO relaying with orthogonal space-time block codes
IEEE Transactions on Communications
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Wireless Personal Communications: An International Journal
A linear analog network coding for asynchronous two-way relay networks
IEEE Transactions on Wireless Communications
Approaching the optimal diversity-multiplexing tradeoff in a four-node cooperative network
IEEE Transactions on Wireless Communications
Cognitive cooperation for the downlink of frequency reuse small cells
EURASIP Journal on Advances in Signal Processing - Special issue on cooperative MIMO multicell networks
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In this work, we extend the nonorthogonal amplify-and-forward (NAF) cooperative diversity scheme to the multiple-input multiple-output (MIMO) channel. A family of space-time block codes for a half-duplex MIMO NAF fading cooperative channel with N relays is constructed. The code construction is based on the nonvanishing determinant (NVD) criterion and is shown to achieve the optimal diversity-multiplexing tradeoff (DMT) of the channel. We provide a general explicit algebraic construction, followed by some examples. In particular, in the single-relay case, it is proved that the Golden code and the 4times4 Perfect code are optimal for the single-antenna and two-antenna cases, respectively. Simulation results reveal that a significant gain (up to 10 dB) can be obtained with the proposed codes, especially in the single-antenna case